Some people might create such fanfiction because they have a different view of the original 'Harry Potter' series. Maybe they don't like the characters, the plot, or the overall world - building. They want to express their dissatisfaction through creating their own stories that go against the general positive perception of 'Harry Potter'.
Well, in some fanfiction, a writer might portray Bill Weasley as 'sucking' perhaps because they want to create a different or more complex character arc for him. Maybe they have a different view of his actions or relationships within the story. It could also be just a creative choice to add drama or conflict.
Maybe the protagonist has a weak personality. For example, being overly indecisive in making choices, which can make the story progress seem dull and frustrating.
Miscommunication can also be a reason. If Chichi misunderstands Goku's intentions, like when he brings home a strange new power - up item that she thinks is dangerous for the family, and she scolds him without really listening to his explanation. Goku, who is not used to having to explain himself in detail, might snap in frustration.
In some fanfictions, Vegeta could be under the influence of some external force. Maybe an evil entity has convinced Vegeta that kidnapping Goku is the key to achieving ultimate power. Vegeta, being power - hungry as he is, falls for it and kidnaps Goku. But later, he realizes his mistake and has to make amends, which can lead to an interesting story arc of redemption and friendship building between the two Saiyans.
Based on the provided search results, there are mixed opinions about the movie "Detective Chinatown 3". Some people think it is a great film, while others consider it to be disappointing. The movie has received criticism for its shift towards comedy and a decrease in the detective elements compared to previous installments. Some viewers found the plot predictable and felt that the humor was lowbrow. However, there are also positive reviews that praise the film for its entertainment value, humor, and the lively atmosphere it creates. Ultimately, whether or not "Detective Chinatown 3" is considered "too bad" is subjective and depends on individual expectations and preferences.